Owner's manual
Table Of Contents
- 42AFL-xxA-N270 Series Flat Panel PC
- 1 Introduction
- 2 Detailed Specifications
- 3 Unpacking
- 4 Installation
- 4.1 Anti-static Precautions
- 4.2 Installation Precautions
- 4.3 Preinstalled Components
- 4.4 Installation and Configuration Steps
- 4.5 Removing the Back Cover
- 4.6 CF Card Installation
- 4.7 HDD Installation (AF-12A-N270 Only)
- 4.8 AT/ATX Mode Selection
- 4.9 Jumper Settings
- 4.10 Mounting the System
- 4.11 Bottom Panel Connectors
- 5 System Maintenance
- 6 AMI BIOS Setup
- 7 Software Drivers
- A System Specifications
- B Safety Precautions
- C BIOS Configuration Options
- D Watchdog Timer
- E Hazardous Materials Disclosure
- F Index

AFL-xxA-N270 Series Panel PC
Page 42
4.9.7 COM3 RS-232/422/485 Serial Port Select Jumper
Jumper Label:
JP6
Jumper Type:
12-pin header (four 3-pin headers combined)
Jumper Settings:
See
Table 4-10
Jumper Location:
See
Figure 4-11
The COM3 RS-232/422/485 Serial Port Select jumper sets the communication protocol
used by the second serial communications port (COM3) as RS-232, RS-422 or RS-485.
The COM3 RS-232/422/485 Serial Port Select settings are shown in
Table 4-10.
RS-232/485 Select Description
Short 1-2 RS-232 Default
Short 4-5 RS-232 Default
Short 7-8 RS-232 Default
Short 10-11 RS-232 Default
Short 2-3 RS-422/485
Short 5-6 RS-422/485
Short 8-9 RS-422/485
Short 11-12 RS-422/485
Table 4-10: COM3 RS-232/422/485 Serial Port Select Jumper Settings
The COM3 RS-232/422/485 Serial Port Select jumper location is shown in Figure 4-11.